<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        div {
            font-size: 50px;
            font-weight: 700;
            color: red;
            /* text-shadow: h-shadow     v-shadow    blur   color; */
            /* 文字阴影：   水平方向距离  竖直方向距离 模糊尺寸 阴影颜色; */
            text-shadow: 5px 5px 6px rgba(0,0,0,.3);
        }
    </style>
</head>
<body>
    <div>你是阴影，我是火影</div>
</body>
</html>